please help me I need help




Benjamin had 1/2

lb of modeling clay. He used 1/5

​lb on Monday and another​ 1/4

​lb on Tuesday.
How many pounds of clay does Benjamin have left after Tuesday?

Respuesta :

1/2 - (1/5 + 1/4) =
10/20 - (4/20 + 5/20) =
10/20 - 9/20 =
1/20 lb left <==

Answer:

1/20 lbs of clay left after Tuesday

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